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SubjectRe: SCO: "thread creation is about a thousand times faster than on
On Mon, Aug 28, 2000 at 10:45:55PM +0100, Alan Cox wrote:
> > In the POSIX spec fork demolishes all threads in the child. This is the
> > only sensible answer and it seems wasteful to ignore the rare sensible
> > parts of the POSIX spec. I think exec should do the same thing: calling
> > thread should die and be replaced by a thread/process that is not in the
> > thread group since it no longer shares memory.
>
> It isnt a sensible answer. Think about a threaded web server firing off
> cgi scripts. You should probably kill those with the same mm. Especially if
> you have an unclone(CLONE_MM) since you can then unshare the VM for a thread
> and exec stuff off it

I don't get it. Why is
fork child to execv interpreter

worse than
pthread_create == clone;
unclone
execv interpreter
?

>

--
---------------------------------------------------------
Victor Yodaiken
Finite State Machine Labs: The RTLinux Company.
www.fsmlabs.com www.rtlinux.com

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